/*
 * ========THE SOLMIX PROJECT=====================================
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * This software is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * http://www.gnu.org/licenses/ 
 * or see the FSF site: http://www.fsf.org. 
 */
package org.solmix.fmk.config.impl;

import java.util.Collections;
import java.util.HashMap;
import java.util.Map;

import org.osgi.service.cm.ConfigurationEvent;
import org.osgi.service.cm.ConfigurationListener;


/**
 * 
 * @author Administrator
 * @version $Id$  2011-9-8
 */

public class ConfigCache  implements ConfigurationListener
{

    private  Map<String,Object>  cache = Collections.synchronizedMap(new HashMap<String, Object>());
   public ConfigCache(){
        this.clearCache();
    }
    /**
     * {@inheritDoc}
     * 
     * @see org.osgi.service.cm.ConfigurationListener#configurationEvent(org.osgi.service.cm.ConfigurationEvent)
     */
    @Override
    public void configurationEvent(ConfigurationEvent event) {
        String pid = event.getPid();
        if (event.getType() == ConfigurationEvent.CM_DELETED || event.getType() == ConfigurationEvent.CM_UPDATED) {
            this.clearCache();
        }
        
    }
    
    public void clearCache(){
        cache.clear();
    }
    public void putAll(Map<String,Object> m){
        cache.putAll(m);
    }
    public void put(String key,Object value){
        cache.put(key, value);
    }
    public Map<String,Object> get(){
        return cache;
    }
   public boolean isNull(){
       if(cache==null||cache.isEmpty())
           return true;
       else
           return false;
   }
/**
 * @param key
 */
public void remove(String key) {
    cache.remove(key);
    
}
}
